Metallic box.



j. R. PEARSUN.

METALLIC BOX. APPLICATION FILED nI5c.29.` 1916.

1,252,489. Patented Jan. 8,1918.

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.TOEN R. PEARsoN, or BROOKLYN, NEW roRx, ASSIGNOR rro HIMSELE, GEORGE .WQ MecLosKEY, AND CHARLES Y. VAN noREN, ALL or BROOKLYN, NEW YORK.

METALLIC BOX.

Specification of Letters Patent..

Patented Jams, rais.

Application led December 29, 1916. Serial No. 139,667.

To all whom t may concern:

Be it lmown that l, JOHN R. PEARsoN, a subject of the King of Sweden, residing in the city of New York, borough of Brooklyn,

in the county of Kings and State of New" York, have invented a certain new and use- -ful Improvement in Metallic Boxes, of

which the following is a specification.

The `invention relates to sheet -metal knock-down boxes, andthe object of the invention is to provide a box which may be easily and quickly assembled, and the sev-r attained, to be hereinafter described and claimed.

The accompanying drawings form a part of this speciicationand show two forms of the invention.

Figure 1 is la side elevation of the improved box. f y

Fig.2 is an end view of the same, partly in vertical section. f

Fig. 3 is a corresponding plan view, partly/f in horizontal section.

Fig. 4 is an interior perspective view of 1one ofthe corners at the junction of an end, side, and the bottom, before the application ,of the cover.

Fig. 5 is a plan view of such corner, on a larger scale.

Fig. 6 is a corresponding view before the application of the corner locking member.

Fig. 7 is a plan or end view yof the corner locking member alone.

Fig. 8 is al vertical section showing the engagement of the cover with an end or side.

Fig. 9 is a perspective view of a corner of such cover. p

Fig. 10 is a horizontal section of a locked corner corresponding to Fig. 5 but showing a modified form of lock.

Fig. 11 is a similar view showing 'the junction of an end and side of such modi-- fied form. before the-insertion of the locking like side members A A. and endl members B B, a i Y bottom memberv C and a cover member D,

all preferably of sheet metal and each a sin- 'gle independent piece.

rl`he bottom C 11nd cover D may be, and are shown as, in all respectsalike andeither may serve in either capacity.

In the form shown in 2 to 7 inclufI sive, the adjacent interior edges of the sides and-ends at the vertical corners of the box are' each bentupon itself twice, as at F Cr to form a double fold with a hook-shaped recess fg in each when seen in 'plan view as in Fig. 6, adapted to receive a similarly shaped locking member E having each edge folded or bent as at K, to match to the recesses f g. The locking member'is of the sameheight as the side and vend members and'is engaged i by inserting its end into. such recesses and forcing it down into the position shown in Fig. 4. Each corner is similarly joined tlm-s forming-an open rectangle ready to receive a bottom and cover. The body of the locking member extends diagonally across the.y

corner, andwith its folds and those ofthe end and side members reinforces the corner and insures its strength and stidness.

On the upper and lowermargins of each side-and end member A and B is a wing H bent inwardly to project at a slight angle Afrom the inner face of such side or end, and

the bottom C and cover D are each provided with corresponding angular flanges J each ange having an outwardly projecting angular lip J1. The wings H and anges-J ,extend nearly to the corners, the spaces thus provided being occupied by the locking members E. Thebottom C is applied to the open rectangle by forcing its flanges J inf wardly in opposition to the spring force offered by such flanges and by the wings H, until the lips J1 pass and snap over and thus 4 j engage the wings, as shown in Fig. e, and

A marginal secure the bottom in place. bead ,J2 forming the edges' of the bottom at the junction of the lianges J therewith, applies closely to the adjacent edges of the end and side membersanda'ords a smoothly rounded finish. g

The cover D is all respects to 310 cannot be reached without destroying or perf` manently'mutilating the box. Figs. 10, 11 and l2, show a form of corner joint in'which the adjacent edges of the side member A1 and end member B1 are each bent inwardly to produce a single fold as at F1 G1, and the locking member E1 has its edges bent to produceI single flanges as at K1 to match to and engage with the folds F1 G1as'shown in Fig. 10. The assembling and application of the bottom and cover is the same as in the form first described. This modified form of joint is simpler and Awill serve successfully but is'not so secure as the preferred joint first described.

rI`he sides, ends, bottoms and covers may be packed and shipped in the knocked down flat condition and'as'sembled as required.

-It will be noted that all the members are of single pieces of sheet metal, adapted to be produced by suitable cutting and forming' dies of analogous tools.

I claim:- 1. In a box of the character set forth, side and end members having their adjacent vertical edges bent inwardly with their bends yside and end members disposed at right angles to each other, removable locking members disposed interiorly of the box at the corners thereof, each having its edges l bent to match said folds with their free edges disposed in said bends, and a bottom and a cover each having means cooperating and interlocking with means on the side and end members.

2. In a box of the character set forth, side and end members having their adjacent vertical edges bent inwardlyy to form opposite folds at the interior corners of such box, inwardly bent angularly projecting wings on `the upper and lower margins of said members, a locking member fOr .each corner, each comprising' a single piece of sheet metal having its edges bent to match to and engage said folds, and to extend diagonally across such corner, and a bottom and a cover, each having an inwardly bent angularly projecting ange on each of its edges, and an outwardly projecting lip on each of said flanges, said lips adapted to engage said wings and hold said bottom and cover in locked engagement with said side and end I members.

` In testimony that I claim the invention 65 above set forth I ax my signature.

JOHN R. PEARSON. 

